Apache Benchmark:
This test profile measures how many requests per second a given system
can sustain when carrying out 700,000 requests with 100 requests being
carried out concurrently.
Vanilla 2.6.39.1 x64 kernel: 10758
All grsecurity/PaX features enabled: 8751 +19%
All but RBAC: 8436 +22%
All but UDEREF: 9652 +10%
All but KERNEXEC/UDEREF: 9633 +10%
All but KERNEXEC/UDEREF/SANITIZE: 9860 +8%
All but KERNEXEC/UDEREF/SANITIZE/STACKLEAK: 10798 +0%
For Apache benchmark:
STACKLEAK: 8% hit
SANITIZE: 2% hit
KERNEXEC: 0% hit
UDEREF: 9% hit
RBAC: -3% hit